How severe is CVE-2007-2815?

CVE-2007-2815 has a CVSS 2.0 base score of 10.0, rated critical severity.

Is CVE-2007-2815 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 73% (99th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2007-2815?

CVE-2007-2815 affects Microsoft Internet Information Services. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2007-2815?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2007-2815 published?

CVE-2007-2815 was published on 2007-05-22 and last updated on 2026-06-16.

CVE-2007-2815

CVE-2007-2815 is a critical-severity vulnerability in Microsoft Internet Information Services with a CVSS 2.0 base score of 10.0. Its EPSS exploit-prediction score of 73% places it in the 99th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-264.

Key facts

Severity: Critical (CVSS 2.0 base score 10.0)
EPSS exploit prediction: 73% (99th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-264
Affected product: Microsoft Internet Information Services
Published: 2007-05-22
Last modified: 2026-06-16

Description

The "hit-highlighting" functionality in webhits.dll in Microsoft Internet Information Services (IIS) Web Server 5.0 only uses Windows NT ACL configuration, which allows remote attackers to bypass NTLM and basic authentication mechanisms and access private web directories via the CiWebhitsfile parameter to null.htw.

Frequently asked questions

What is CVE-2007-2815?: The "hit-highlighting" functionality in webhits.dll in Microsoft Internet Information Services (IIS) Web Server 5.0 only uses Windows NT ACL configuration, which allows remote attackers to bypass NTLM and basic authentication mechanisms and access private web directories via the CiWebhitsfile parameter to null.htw.
How severe is CVE-2007-2815?: CVE-2007-2815 has a CVSS 2.0 base score of 10.0, rated critical severity.
Is CVE-2007-2815 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 73% (99th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2007-2815?: CVE-2007-2815 affects Microsoft Internet Information Services. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2007-2815?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2007-2815 published?: CVE-2007-2815 was published on 2007-05-22 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:microsoft:internet_information_services:5.0:*:*:*:*:*:*:*

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